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<title>module Syslog - syslog: Ruby Standard Library Documentation</title>


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  <h3>Methods</h3>

  <ul class="link-list" role="directory">
    <li ><a href="#method-c-close">::close</a>
    <li ><a href="#method-c-facility">::facility</a>
    <li ><a href="#method-c-ident">::ident</a>
    <li ><a href="#method-c-inspect">::inspect</a>
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    <li ><a href="#method-c-open">::open</a>
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    <main role="main" aria-labelledby="module-Syslog">
    <h1 id="module-Syslog" class="module">
      module Syslog
    </h1>

    <section class="description">
    
<p>The syslog package provides a Ruby interface to the POSIX system logging facility.</p>

<p><a href="Syslog.html"><code>Syslog</code></a> messages are typically passed to a central logging daemon. The daemon may filter them; route them into different files (usually found under /var/log); place them in SQL databases; forward them to centralized logging servers via TCP or UDP; or even alert the system administrator via email, pager or text message.</p>

<p>Unlike application-level logging via <a href="Syslog/Logger.html"><code>Logger</code></a> or Log4r, syslog is designed to allow secure tamper-proof logging.</p>

<p>The syslog protocol is standardized in RFC 5424.</p>

    </section>

      <section id="5Buntitled-5D" class="documentation-section">


      <section class="constants-list">
      <header>
      <h3>Constants</h3>
      </header>
      <dl>
          <dt id="VERSION">VERSION
          <dd><p><a href="Syslog.html"><code>Syslog</code></a> macros</p>
        </dl>
        </section>



                <section id="public-class-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Class Methods</h3>
                </header>

                  <div id="method-c-close" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">close</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Closes the syslog facility. Raises a runtime exception if it is not open.</p>

                              <div class="method-source-code" id="close-source">
            <pre>static VALUE mSyslog_close(VALUE self)
{
    if (!syslog_opened) {
        rb_raise(rb_eRuntimeError, &quot;syslog not opened&quot;);
    }

    closelog();

    xfree((void *)syslog_ident);
    syslog_ident = NULL;
    syslog_options = syslog_facility = syslog_mask = -1;
    syslog_opened = 0;

    return Qnil;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-facility" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">facility</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Returns the facility number used in the last call to open()</p>

                              <div class="method-source-code" id="facility-source">
            <pre>static VALUE mSyslog_facility(VALUE self)
{
    return syslog_opened ? INT2NUM(syslog_facility) : Qnil;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-ident" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">ident</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Returns the identity string used in the last call to open()</p>

                              <div class="method-source-code" id="ident-source">
            <pre>static VALUE mSyslog_ident(VALUE self)
{
    return syslog_opened ? rb_str_new2(syslog_ident) : Qnil;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-inspect" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">inspect</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Returns an inspect() string summarizing the object state.</p>

                              <div class="method-source-code" id="inspect-source">
            <pre>static VALUE mSyslog_inspect(VALUE self)
{
    Check_Type(self, T_MODULE);

    if (!syslog_opened)
        return rb_sprintf(&quot;&lt;#%&quot;PRIsVALUE&quot;: opened=false&gt;&quot;, self);

    return rb_sprintf(&quot;&lt;#%&quot;PRIsVALUE&quot;: opened=true, ident=\&quot;%s\&quot;, options=%d, facility=%d, mask=%d&gt;&quot;,
                      self,
                      syslog_ident,
                      syslog_options,
                      syslog_facility,
                      syslog_mask);
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-instance" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">instance</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Returns self, for backward compatibility.</p>

                              <div class="method-source-code" id="instance-source">
            <pre>static VALUE mSyslog_instance(VALUE self)
{
    return self;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-log" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          log(priority, format_string, *format_args)
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Log a message with the specified priority. Example:</p>

<pre class="ruby"><span class="ruby-constant">Syslog</span>.<span class="ruby-identifier">log</span>(<span class="ruby-constant">Syslog</span><span class="ruby-operator">::</span><span class="ruby-constant">LOG_CRIT</span>, <span class="ruby-string">&quot;Out of disk space&quot;</span>)
<span class="ruby-constant">Syslog</span>.<span class="ruby-identifier">log</span>(<span class="ruby-constant">Syslog</span><span class="ruby-operator">::</span><span class="ruby-constant">LOG_CRIT</span>, <span class="ruby-string">&quot;User %s logged in&quot;</span>, <span class="ruby-constant">ENV</span>[<span class="ruby-string">&#39;USER&#39;</span>])
</pre>

<p>The priority levels, in descending order, are:</p>
<dl class="rdoc-list note-list"><dt>LOG_EMERG
<dd>
<p>System is unusable</p>
</dd><dt>LOG_ALERT
<dd>
<p>Action needs to be taken immediately</p>
</dd><dt>LOG_CRIT
<dd>
<p>A critical condition has occurred</p>
</dd><dt>LOG_ERR
<dd>
<p>An error occurred</p>
</dd><dt>LOG_WARNING
<dd>
<p>Warning of a possible problem</p>
</dd><dt>LOG_NOTICE
<dd>
<p>A normal but significant condition occurred</p>
</dd><dt>LOG_INFO
<dd>
<p>Informational message</p>
</dd><dt>LOG_DEBUG
<dd>
<p>Debugging information</p>
</dd></dl>

<p>Each priority level also has a shortcut method that logs with it’s named priority. As an example, the two following statements would produce the same result:</p>

<pre class="ruby"><span class="ruby-constant">Syslog</span>.<span class="ruby-identifier">log</span>(<span class="ruby-constant">Syslog</span><span class="ruby-operator">::</span><span class="ruby-constant">LOG_ALERT</span>, <span class="ruby-string">&quot;Out of memory&quot;</span>)
<span class="ruby-constant">Syslog</span>.<span class="ruby-identifier">alert</span>(<span class="ruby-string">&quot;Out of memory&quot;</span>)
</pre>

                              <div class="method-source-code" id="log-source">
            <pre>static VALUE mSyslog_log(int argc, VALUE *argv, VALUE self)
{
    VALUE pri;

    rb_check_arity(argc, 2, UNLIMITED_ARGUMENTS);

    argc--;
    pri = *argv++;

    if (!FIXNUM_P(pri)) {
        rb_raise(rb_eTypeError, &quot;type mismatch: %&quot;PRIsVALUE&quot; given&quot;, rb_obj_class(pri));
    }

    syslog_write(FIX2INT(pri), argc, argv);

    return self;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-mask" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">mask</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Returns the log priority mask in effect. The mask is not reset by opening or closing syslog.</p>

                              <div class="method-source-code" id="mask-source">
            <pre>static VALUE mSyslog_get_mask(VALUE self)
{
    return syslog_opened ? INT2NUM(syslog_mask) : Qnil;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-mask-3D" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          mask=(priority_mask)
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Sets the log priority mask. A method LOG_UPTO is defined to make it easier to set mask values. Example:</p>

<pre class="ruby"><span class="ruby-constant">Syslog</span>.<span class="ruby-identifier">mask</span> = <span class="ruby-constant">Syslog</span><span class="ruby-operator">::</span><span class="ruby-constant">LOG_UPTO</span>(<span class="ruby-constant">Syslog</span><span class="ruby-operator">::</span><span class="ruby-constant">LOG_ERR</span>)
</pre>

<p>Alternatively, specific priorities can be selected and added together using binary OR. Example:</p>

<pre class="ruby"><span class="ruby-constant">Syslog</span>.<span class="ruby-identifier">mask</span> = <span class="ruby-constant">Syslog</span><span class="ruby-operator">::</span><span class="ruby-constant">LOG_MASK</span>(<span class="ruby-constant">Syslog</span><span class="ruby-operator">::</span><span class="ruby-constant">LOG_ERR</span>) <span class="ruby-operator">|</span> <span class="ruby-constant">Syslog</span><span class="ruby-operator">::</span><span class="ruby-constant">LOG_MASK</span>(<span class="ruby-constant">Syslog</span><span class="ruby-operator">::</span><span class="ruby-constant">LOG_CRIT</span>)
</pre>

<p>The priority mask persists through calls to open() and close().</p>

                              <div class="method-source-code" id="mask-3D-source">
            <pre>static VALUE mSyslog_set_mask(VALUE self, VALUE mask)
{
    if (!syslog_opened) {
        rb_raise(rb_eRuntimeError, &quot;must open syslog before setting log mask&quot;);
    }

    setlogmask(syslog_mask = NUM2INT(mask));

    return mask;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-open" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          open(ident, options, facility) &rarr; syslog
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Open the syslog facility. Raises a runtime exception if it is already open.</p>

<p>Can be called with or without a code block. If called with a block, the <a href="Syslog.html"><code>Syslog</code></a> object created is passed to the block.</p>

<p>If the syslog is already open, raises a RuntimeError.</p>

<p><code>ident</code> is a String which identifies the calling program.</p>

<p><code>options</code> is the logical OR of any of the following:</p>
<dl class="rdoc-list note-list"><dt>LOG_CONS
<dd>
<p>If there is an error while sending to the system logger, write directly to the console instead.</p>
</dd><dt>LOG_NDELAY
<dd>
<p>Open the connection now, rather than waiting for the first message to be written.</p>
</dd><dt>LOG_NOWAIT
<dd>
<p>Don’t wait for any child processes created while logging messages. (Has no effect on Linux.)</p>
</dd><dt>LOG_ODELAY
<dd>
<p>Opposite of LOG_NDELAY; wait until a message is sent before opening the connection. (This is the default.)</p>
</dd><dt>LOG_PERROR
<dd>
<p>Print the message to stderr as well as sending it to syslog. (Not in POSIX.1-2001.)</p>
</dd><dt>LOG_PID
<dd>
<p>Include the current process ID with each message.</p>
</dd></dl>

<p><code>facility</code> describes the type of program opening the syslog, and is the logical OR of any of the following which are defined for the host OS:</p>
<dl class="rdoc-list note-list"><dt>LOG_AUTH
<dd>
<p>Security or authorization. Deprecated, use LOG_AUTHPRIV instead.</p>
</dd><dt>LOG_AUTHPRIV
<dd>
<p>Security or authorization messages which should be kept private.</p>
</dd><dt>LOG_CONSOLE
<dd>
<p>System console message.</p>
</dd><dt>LOG_CRON
<dd>
<p>System task scheduler (cron or at).</p>
</dd><dt>LOG_DAEMON
<dd>
<p>A system daemon which has no facility value of its own.</p>
</dd><dt>LOG_FTP
<dd>
<p>An FTP server.</p>
</dd><dt>LOG_KERN
<dd>
<p>A kernel message (not sendable by user processes, so not of much use to Ruby, but listed here for completeness).</p>
</dd><dt>LOG_LPR
<dd>
<p>Line printer subsystem.</p>
</dd><dt>LOG_MAIL
<dd>
<p>Mail delivery or transport subsystem.</p>
</dd><dt>LOG_NEWS
<dd>
<p>Usenet news system.</p>
</dd><dt>LOG_NTP
<dd>
<p>Network Time Protocol server.</p>
</dd><dt>LOG_SECURITY
<dd>
<p>General security message.</p>
</dd><dt>LOG_SYSLOG
<dd>
<p>Messages generated internally by syslog.</p>
</dd><dt>LOG_USER
<dd>
<p>Generic user-level message.</p>
</dd><dt>LOG_UUCP
<dd>
<p>UUCP subsystem.</p>
</dd><dt>LOG_LOCAL0 to LOG_LOCAL7
<dd>
<p>Locally-defined facilities.</p>
</dd></dl>

<p>Example:</p>

<pre class="ruby"><span class="ruby-constant">Syslog</span>.<span class="ruby-identifier">open</span>(<span class="ruby-string">&quot;webrick&quot;</span>, <span class="ruby-constant">Syslog</span><span class="ruby-operator">::</span><span class="ruby-constant">LOG_PID</span>,
            <span class="ruby-constant">Syslog</span><span class="ruby-operator">::</span><span class="ruby-constant">LOG_DAEMON</span> <span class="ruby-operator">|</span> <span class="ruby-constant">Syslog</span><span class="ruby-operator">::</span><span class="ruby-constant">LOG_LOCAL3</span>)
</pre>

                              <div class="method-source-code" id="open-source">
            <pre>static VALUE mSyslog_open(int argc, VALUE *argv, VALUE self)
{
    VALUE ident, opt, fac;
    const char *ident_ptr;

    if (syslog_opened) {
        rb_raise(rb_eRuntimeError, &quot;syslog already open&quot;);
    }

    rb_scan_args(argc, argv, &quot;03&quot;, &amp;ident, &amp;opt, &amp;fac);

    if (NIL_P(ident)) {
        ident = rb_gv_get(&quot;$0&quot;);
    }
    ident_ptr = StringValueCStr(ident);
    syslog_ident = strdup(ident_ptr);

    if (NIL_P(opt)) {
        syslog_options = LOG_PID | LOG_CONS;
    } else {
        syslog_options = NUM2INT(opt);
    }

    if (NIL_P(fac)) {
        syslog_facility = LOG_USER;
    } else {
        syslog_facility = NUM2INT(fac);
    }

    openlog(syslog_ident, syslog_options, syslog_facility);

    syslog_opened = 1;

    setlogmask(syslog_mask = setlogmask(0));

    /* be like File.new.open {...} */
    if (rb_block_given_p()) {
        rb_ensure(rb_yield, self, mSyslog_close, self);
    }

    return self;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-open-21" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          reopen(ident, options, facility) &rarr; syslog
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Closes and then reopens the syslog.</p>

<p>Arguments are the same as for open().</p>

                              <div class="method-source-code" id="open-21-source">
            <pre>static VALUE mSyslog_reopen(int argc, VALUE *argv, VALUE self)
{
    mSyslog_close(self);

    return mSyslog_open(argc, argv, self);
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-opened-3F" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          opened?
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Returns true if the syslog is open.</p>

                              <div class="method-source-code" id="opened-3F-source">
            <pre>static VALUE mSyslog_isopen(VALUE self)
{
    return syslog_opened ? Qtrue : Qfalse;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-options" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">options</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Returns the options bitmask used in the last call to open()</p>

                              <div class="method-source-code" id="options-source">
            <pre>static VALUE mSyslog_options(VALUE self)
{
    return syslog_opened ? INT2NUM(syslog_options) : Qnil;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-reopen" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          reopen(ident, options, facility) &rarr; syslog
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Closes and then reopens the syslog.</p>

<p>Arguments are the same as for open().</p>

                              <div class="method-source-code" id="reopen-source">
            <pre>static VALUE mSyslog_reopen(int argc, VALUE *argv, VALUE self)
{
    mSyslog_close(self);

    return mSyslog_open(argc, argv, self);
}</pre>
                              </div>
                            </div>


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    console.log("  --------------- ");
  }


const vueCssApp = new Vue({
el: '#menubar',
data: {
isDark: false
},
methods: {
toggleClass: function(event){
this.isDark = !this.isDark;
}
}
})

const vueApp = new Vue({
el: '#vapp',
data: { 
isOpen: true
},

mounted() {
this.handleResize();
this.manage_mob_classes();
window.addEventListener('resize', this.handleResize)
//this.isOpen !=  (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent));
},
destroyed() {
window.removeEventListener('resize', this.handleResize)
},
created() {
//manage_mob_classes();
},

methods : {
isMobile() {
  return (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent));
},

  handleResize() {
    if (!this.isMobile()) {
      this.isOpen = window.innerWidth > 800;
    }
  },

  manage_mob_classes() {
    if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
      $("nav").addClass("mob_nav");
      $("main").addClass("mob_main");
      $("#extraz").addClass("mob_extraz");
      $("#carbonads-container").addClass("mob_carbonads-container");
      this.isOpen  = false;
    } else {
      $("nav").removeClass("mob_nav") 
        $("main").removeClass("mob_main");
      $("#extraz").removeClass("mob_extraz");
      $("#carbonads-container").removeClass("mob_carbonads-container");
      this.isOpen  = true;
    }
  },

  toggleNav() {
    this.isOpen =! this.isOpen ;
    // alert("Toggle nav!");
    console.log("toggleNav() click: " + this.isOpen );
  }
}
})

$("#carbonads-container").append(ads);


$(function() {

    var darkmode = Cookies.get("darkmode");
    console.log("Document ready: " + darkmode);

    if ( darkmode  == "true" ) {
      $('#cssSelect').text("Light mode");
    } else {
      $('#cssSelect').text("Dark mode");
     }

    $('body').css('display','block');
    });

</script>

    
  </body> 
</html>

